{"product_id":"westland-hydrangea-colourant-500g","title":"Westland Hydrangea Colourant 500g","description":"\u003cp\u003eHydrangeas have a party trick most flowers can't match — change the soil chemistry, change the bloom colour. Westland Hydrangea Colourant acidifies the soil around pink varieties, turning them a genuine blue, or darker pinks to mauve-blue, using a combination of iron and aluminium salts.\u003c\/p\u003e\u003cp\u003eWorks best on plants already growing in acid soil; for alkaline soil, pair with an ericaceous compost or simply double the application rate. A fun, slightly alchemical way to change the whole character of a border.\u003c\/p\u003e","brand":"Westland Horticulture Ltd","offers":[{"title":"Default Title","offer_id":53581456507208,"sku":"1069753","price":7.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0882\/4170\/1192\/files\/hydrangeacolourant_westland_20600082_1_fop-300x300.webp?v=1784843047","url":"https:\/\/rowenagc.com\/products\/westland-hydrangea-colourant-500g","provider":"Rowena Garden Centre","version":"1.0","type":"link"}